CN102340798A - Embedded-Linux-system-based automatic monitoring device and method for wireless local area network (WLAN) - Google Patents
Embedded-Linux-system-based automatic monitoring device and method for wireless local area network (WLAN) Download PDFInfo
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- CN102340798A CN102340798A CN2011103116044A CN201110311604A CN102340798A CN 102340798 A CN102340798 A CN 102340798A CN 2011103116044 A CN2011103116044 A CN 2011103116044A CN 201110311604 A CN201110311604 A CN 201110311604A CN 102340798 A CN102340798 A CN 102340798A
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Abstract
The invention relates to an embedded-Linux-system-based automatic monitoring device and an embedded-Linux-system-based automatic monitoring method for a wireless local area network (WLAN). The device comprises a power management unit, a microprocessor unit, a storage unit, a standby battery unit, a real-time clock unit, a general packet radio service (GPRS) wireless module, a WLAN module, a universal serial bus (USB) interface unit and a serial port unit. The software system structure of the device comprises a bootstrap loader module layer, an embedded Linux system kernel module layer, a driver module layer and an application program module layer. The device and the method have the advantages that: the device automatically finishes various test items, and also finishes alarming indication for overrange wireless network quality parameters of the WLAN; the internal GPRS wireless module of the device reports alarming needs and data to an encryption server platform by a transmission control protocol (TCP)/Internet protocol (IP) and a short message, a server is connected with the Internet, and a client can configure the basic information of the device by a web browser and view test results and alarming items of a certain test site only after being connected with the Internet; and the low-cost automatic monitoring device for the WLAN is provided for the stationing testing of a telecommunication operator.
Description
Technical field
The present invention relates to the wlan network measuring technology of radio communication field tests, mainly is a kind of wlan network automated watch-keeping facility and method based on embedded Linux system.
Background technology
WLAN (Wireless Local Area Networks; WLAN) be data transmission system quite easily, it utilizes radio frequency (Radio Frequency; RF) technology replaces the LAN that old-fashioned copper twisted pairs of getting in the way (Coaxial) is constituted, and makes WLAN can utilize simple access architecture to let the user see through it, reaches the ideal state of " information is changed with oneself, facility walk all over the world ".WLAN topological structure general introduction: based on the WLAN of IEEE802.11bgn standard allow in LAN environment, to use undelegated 2.4 or the 5.3GHz radio-frequency range carry out wireless connections.
The abbreviation of GPRS--general packet radio service technology (General Packet Radio Service), it is a kind of mobile data services that the gsm mobile telephone user can use.Can the say so continuity of GSM of GPRS.GPRS is continuously different in the mode of channel transmission with in the past, is to transmit with package (Packet) formula, so the expense that the user bore is to calculate with its data transmission unit, is not its whole channel of use, and is comparatively cheap in theory.The transmission rate of GPRS can be promoted to 56 even 114Kbps.
Built-in Linux is to be the embedded operating system on basis with Linux, and it is widely used in the fields such as mobile phone, PDA(Personal Digital Assistant), media player, consumption electronic products and Aero-Space.Embedded Linux is that the (SuSE) Linux OS with increased popularity carries out cutting and revises a kind of operating system that makes it on embedded computer system, to move.
Along with increasing of wlan network covering points, urgent need will effectively be monitored wlan network and covered focus, monitors newly-built AP and WLAN network management project, extend, reconstruction project, and places such as the big railway station of flow of the people, bus station, public square.Known monitoring method is to use WLAN special test instrument or tests being inserted with on the notebook computer of wireless network card operation special test software; Like the test of each items such as the survey of wireless signal intensity, signal to noise ratio test, use WLAN special test instrument or, in the design object overlay area, cover level detecting being inserted with operation special test software on the notebook computer of wireless network card; Because WLAN special test instrument costs an arm and a leg, the notebook computer personnel randomness that is inserted with wireless network card is bigger, and artificial factor is more, is prone to cause the incorrect of test result; These all need the manual testing, if test specification is very big, just need flower great amount of manpower and material resources, and this is that the manager is unwilling to see.
Summary of the invention
The object of the invention will overcome the deficiency of above-mentioned technology just, and a kind of wlan network automated watch-keeping facility and method based on embedded Linux system is provided.Solve the defective of above-mentioned known monitoring method, realize in real time monitoring wlan network state and alarm in time automatically, and need not spend great amount of manpower and material resources input; The user only need just can monitor somewhere wlan network state in the place that the Internet is arranged.
The present invention solves the technical scheme that its technical problem adopts: this wlan network automated watch-keeping facility based on embedded Linux system comprises PMU, microprocessor unit, memory cell, real-time clock unit, reserve battery unit, GPRS wireless module, WLAN module, usb interface unit and serial ports unit composition; Real-time clock unit and memory cell are electrically connected with microprocessor unit, and microprocessor unit is connected with the GPRS wireless module with serial ports unit one tunnel through usb interface unit, and another road is connected with the WLAN module.The software architecture of this device comprises: bootstrap loader module layer, embedded Linux system kernel module layer, driver module layer, application program module layer.The effect of PMU is to become the voltage transitions of battery operating voltages such as the needed 5V in each unit, 3.3V, 1.8V through DC-DC with LDO; The effect of microprocessor unit and memory cell is to be used for the carrier of operation system and application program and storage data; The effect of real-time clock unit provides accurate clock and gives equipment, data of preserving during test and association in time; The effect of reserve battery is that the equipment of keeping was timely worked 3 hours again after civil power had a power failure suddenly, preserves test data timely and produces power failure alarm reporting to server platform; The effect of GPRS wireless module is to be reported to cryptographic services applicator platform end to needs alarm and data through TCP/IP (Transmission Control Protocol/Internet Protocol) agreement or note, and server is connected to the Internet; When TCP/IP is obstructed, use note to report; The effect of WLAN module is the vitals of monitoring wlan network state; The effect of usb interface unit is that the USB mouth connects the WLAN module, and the effect of serial ports unit is the functions such as some configurations of local debugging, this locality.
Monitoring method of the present invention, WEB server be according to keeper's requirements set test event, test mode, and be handed down to monitoring device, monitoring device is preserved these data; Test mode comprise single monitoring time started and concluding time, monitoring testing time, monitoring interval and monitoring result report mode; Monitoring device begins test according to preset task, after test is accomplished, test result is saved in memory cell with the mode of encrypting; And reporting database and WEB server according to the mode that reports of monitoring result, the keeper is the local wlan network situation of real time inspection on database and WEB server; When test result is unusual, promptly produce alarm.
As preferably, the monitoring information that memory cell is preserved information, WLAN that the required data of this device monitoring comprise information, the GPRS of database and WEB server is the enciphered message of local serial ports and telex network perhaps.
As preferably, test event comprises: the strength test of WLAN wireless signal, signal to noise ratio test, authentification of user test, the test of WEB authentication access delay, the test of Ping bag, user offline test, throughput of system and access bandwidth are tested.
The effect that the present invention is useful is: accomplish the strength test of wlan network wireless signal, signal to noise ratio test, authentification of user test, the test of WEB authentication access delay, the test of Ping bag, user offline test, throughput of system and access bandwidth test etc. automatically by equipment; Also accomplish the alarm indication of the ultra scope of WLAN quality of wireless network parameter; The inside GPRS wireless module of equipment is reported to cryptographic services applicator platform end to needs alarm and data through ICP/IP protocol and note, and server is connected to the Internet; As long as client can connect the Internet, just can be through the essential information and the test result of checking the somewhere test station, alarm item of variety of web-browser configurations equipment; Cheap wlan network monitoring equipment power supply letter operator is provided the test of layouting.
Equipment work of the present invention can not produce any harmful interference in the 2.4GHz frequency range to other communication system.
This device can be installed in indoor or outdoor, round-the-clock monitoring wlan network, and the personnel that need not intervene.
Description of drawings
Accompanying drawing 1 is a WLAN automated watch-keeping facility application scenarios sketch map of the present invention;
Accompanying drawing 2 is reserve battery of the present invention and PMU;
Accompanying drawing 3 is microprocessor units of the present invention;
Accompanying drawing 4 is memory cell of the present invention;
Accompanying drawing 5 is real-time clock of the present invention unit;
Accompanying drawing 6 is GPRS wireless module unit of the present invention and WLAN module interface unit;
Accompanying drawing 7 is USB interface of the present invention and local serial ports unit;
Accompanying drawing 8 is automatic monitoring schematic flow sheets 1 of the present invention;
Accompanying drawing 9 is automatic monitoring schematic flow sheets 2 of the present invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer, reach for example below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that described hereinly, and be not used in qualification the present invention for example only in order to explaining the present invention.
Fig. 1 is that WLAN automated watch-keeping facility of the present invention is used sketch map, and device comprises reserve battery and PMU, microprocessor unit, memory cell, real-time clock unit, GPRS wireless module unit, WLAN module, usb interface unit and serial ports unit; Test Application has comprised database and WEB server; The test subscriber uses mobile phone or PC to browse test result and parameter setting.
Fig. 2 is battery of the present invention and PMU; Voltage transitions through DC-DC (U3) and LDO (U1, U2); Become 5V, 3.3V, 1.8V; 5V supplies with wireless module, USB interface, charging circuit etc., and 3.3V supplies with unit such as microprocessor, memory, real-time clock, and 1.8V supplies with micro-processor kernel; Battery charging management partly comprises Charge Management IC (U6), battery protection ic (U11) and peripheral cell; This unit also comprises booster circuit (U27),, when powered battery, it is that GPRS wireless module, WLAN module etc. provide powerful continuous current.
Fig. 3 is a microprocessing unit of the present invention, microprocessing unit mainly by U14 (ARM9 microprocessor), Y1 oikocryst shake 18.432MHz, Y2 clock crystal oscillator 32.768KHz, U16 resets and house dog IC forms.
Fig. 4 is a memory cell of the present invention, and U19, U20 are SDRAM, and it is a synchronous DRAM; U21 is nandflash; The flash of the support 256MB capacity of installing in the instrument, U22 is dataflash, is used for preserving the boot bootloader and the linux kernel of linux system; U23 is EEPROM, is used for preserving critical data; J13 is the SD card, support expanded device memory space.
Fig. 5 is real-time clock of the present invention unit, comprises real-time clock IC (U18) and peripheral circuit, is used for real-time clock to device being provided.
Fig. 6 is GPRS wireless module unit of the present invention and WLAN module interface unit, and GPRS wireless module J4 is connected with ARM9 through USB, UART mouth and communicates, and realizes that data are reported to the function of platform.The WLAN module is the important module in apparatus of the present invention, and is responsible on the one hand mutual, more important on the other hand with local handset or PC, is as the automatic test core module of WLAN.
Fig. 7 usb interface unit of the present invention and serial ports unit, J14 is the DEBUG debugging interface, J16 is the local serial ports of RS232, directly can to carry out serial ports mutual with PC; Usb interface unit is to be connected to GPRS wireless module and WLAN module.
Fig. 8 and Fig. 9 are automatic monitoring schematic flow sheets of the present invention, and monitoring flow process automatically is described.
Be to combine Fig. 1 ~ Fig. 9 that operation principle of the present invention is described below:
1.. memory cell shown in Figure 4 is preserved the required data of this device monitoring, comprising:
The information of database a. shown in Figure 1 and WEB server;
B. the information of GPRS shown in Figure 6;
C. the monitoring information of WLAN shown in Figure 6;
D. the enciphered message through GPRS shown in Figure 6 or local serial ports of RS232 shown in Figure 7 and telex network.
2.. monitoring device is connected to the WEB server shown in Fig. 1 by GPRS through the TCP/IP mode, and the WEB server is according to keeper's requirements set test event, test mode, and be handed down to monitoring device, monitoring device is preserved these data.Test event comprises:
A. WLAN wireless signal strength test;
B. signal to noise ratio test;
C. authentification of user test;
D. WEB authentication access delay test;
E. Ping bag test;
F. user offline test;
G. throughput of system and access bandwidth test.
Test mode comprises:
A. single is monitored time started and concluding time;
B. monitor testing time;
The interval of c. monitoring;
D. monitoring result reports mode (report immediately or regularly report)
3.. monitoring device begins test according to preset task, after test is accomplished, test result is saved in memory cell shown in Figure 4 (can regularly remove) with the mode of encrypting; And report database and WEB server according to the mode that reports of monitoring result.
4.. the monitoring task only need be set once, can forever preserve.The keeper can be on database and WEB server the local wlan network situation of real time inspection; When test result is unusual, promptly can produce alarm.
It is understandable that, for a person skilled in the art, technical scheme of the present invention and inventive concept are equal to replacement or change the protection range that all should belong to the appended claim of the present invention.
Claims (4)
1. the wlan network automated watch-keeping facility based on embedded Linux system is characterized in that: comprise PMU, microprocessor unit, memory cell, real-time clock unit, reserve battery unit, GPRS wireless module, WLAN module, usb interface unit and serial ports unit composition; Real-time clock unit and memory cell are electrically connected with microprocessor unit, and microprocessor unit is connected with the GPRS wireless module with serial ports unit one tunnel through usb interface unit, and another road is connected with the WLAN module; Wherein, microprocessor unit and memory cell are the carriers and storage data that is used for operation system and application program; The GPRS wireless module is to be used for being reported to encryption WEB server platform end to needs alarm and data through ICP/IP protocol or note, and the WEB server is connected to the Internet; The WLAN module is to be used to monitor the wlan network state.
2. monitoring method that adopts the described wlan network automated watch-keeping facility based on embedded Linux system of claim 1; It is characterized in that: the WEB server is according to keeper's requirements set test event; Test mode, and be handed down to monitoring device, monitoring device is preserved these data; Test mode comprise single monitoring time started and concluding time, monitoring testing time, monitoring interval and monitoring result report mode; Monitoring device begins test according to preset task, after test is accomplished, test result is saved in memory cell with the mode of encrypting; And reporting database and WEB server according to the mode that reports of monitoring result, the keeper is the local wlan network situation of real time inspection on database and WEB server; When test result is unusual, promptly produce alarm.
3. the wlan network automatic monitoring method based on embedded Linux system according to claim 2 is characterized in that: memory cell is preserved the required data of this device monitoring and is comprised the information of database and WEB server, the information of GPRS, the monitoring information of WLAN or the enciphered message of local serial ports and telex network.
4. the wlan network automatic monitoring method based on embedded Linux system according to claim 2, it is characterized in that: test event comprises: the strength test of WLAN wireless signal, signal to noise ratio test, authentification of user test, the test of WEB authentication access delay, the test of Ping bag, user offline test, throughput of system and access bandwidth test.
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Cited By (5)
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| CN102687541A (en) * | 2012-02-23 | 2012-09-19 | 华为技术有限公司 | Method, device, and system for acquiring quality information of wireless network |
| CN104540149A (en) * | 2014-12-29 | 2015-04-22 | 无锡赛思汇智科技有限公司 | Site testing device and method of wireless mesh network |
| CN105306278A (en) * | 2015-11-24 | 2016-02-03 | 武汉烽火网络有限责任公司 | System and method for realizing PING (Packet Internet Groper) network diagnosis based on embedded Web network management |
| CN108076457A (en) * | 2017-12-15 | 2018-05-25 | 北京国电通网络技术有限公司 | A kind of safety-type power grid private radio communication module of wisdom based on linux system |
| CN108495315A (en) * | 2018-03-29 | 2018-09-04 | 四川斐讯信息技术有限公司 | Portal monitoring systems and system |
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| CN108076457A (en) * | 2017-12-15 | 2018-05-25 | 北京国电通网络技术有限公司 | A kind of safety-type power grid private radio communication module of wisdom based on linux system |
| CN108495315A (en) * | 2018-03-29 | 2018-09-04 | 四川斐讯信息技术有限公司 | Portal monitoring systems and system |
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Application publication date: 20120201 |